Typewriting machine



Aug. 4, 1931. G, G, Gom@ 1,817,253

TYPEWRITING MACHINE HI ff 57"". Im

WTNE-SSES Aug 4, 1931. G. G. GOING 1,817,253

TYPEWRITING MACHINE Filed GCT.. 5l, 1927 3 Sheets-Sheet 2 WITNESGES L;

Aug. 4, 1931. G. G. GOING TYPEWRITING MACHINE s sheets-sheet 5 FiledOct. 3l, 1927 9 IN VEN TOR 4@ 5L A TTRNEY WITNESES Patented Aug. 4, 1931NETE STATES PATENT @FCE GEORGE G. GOITG, @F MIDBETGFIFT, CGNI'IECTICUT,ASSEGNOR T0 B-MENGTGN TYPE- WRITEE?. COMANY, OF ILQN, NEW YOEIK, ACORPQBTIN 0F NEN YORK Application 'iecl Getooer 31, 1927.

My invention relates to typewriting machines, and more particularly tocarriage escapement mechanism and controlling means therefor.

It often occurs that an operator will dwell on the space key, holding itdepressed while actuating one or more printing keys, and vice versa.This operation, in many machines heretofore in use, resulted in holdingthe carriage against letter feed movement at a time when a feed thereofshould be effected by the actuated key or keys. As a consequencecharacters would be piled", or written one on top of another, or acharacter would be printed where a space should be provided.

Generally stated, the main object of my invention is to provide animproved means by which this difficulty may be overcome and to providemechanism of the character specified which is comparatively simple inconstruction reliable and highly efficient in use and which may bemanufactured at comparatively small cost.

A further object of my invention is to provide a construction such as isspecified above that may be readily incorporated in existing typewritingmachines without changing, or materially changing, the structuralfeatures thereof, or the escapement mechanism employed therein..

To the above and other ends which will hereinafter appear, my inventionconsists in the features of construction, arrangements of partsl andcombinations of devices set forth in the following description andparticularly pointed out in the appended claims.

In the accompanying drawings wherein like reference characters designatecorresponding parts in the different views,

Fig. l is a side elevation, with parts in section and parts omitted, ofa Remington- Noiseless No. 6 machine equipped with the devices of myinvention; the view showing the parts as they appear when the'space keyis held depressed.

Fig. 2 is a like view of the same with some of the parts shown in. Fig,l omitted, and illustrating the partswas "they appear when a tr,-,-ifiet iv Serial No. 229,962.

Fig. 3 is a detail, perspective view of the actuating connections fromthe space key to the dog rocker, together with some of the associatedparts; the view showing the parts in normal position.

Figs. 4, 5, 6 and 7 are fragmentary, detail side views showing thetrip-off mechanism controlled by the space key at different stages ofits operation on the dog rocker; Fig. l indicating the normal positionsof parts; Fig. 5, the positions of the parts at just about the instantwhen the trip-off device after having actuated the dog rocker is aboutto release it for independent return movement; Fig. 6, the positions ofthe parts after the dog rocker has returned to normal position while thetrip-off device remains advanced in its actuated position; and Fig. 7,the positions the parts assume when the trip-off device is just about toclear the dog rocker in returning to normal position without actuatingthe dog rocker.

.Fig 8 is a detail, fragn'ientary, top plan view of the carriageescapement devices.

Figs. 9, 10, ll and l2 are diagrammatic views illustrating thedisposition of the escapement devices at different stages of the cycleof movements thereof during a single letter space movement of thecarriage.

Fig. 13 is a fragmentary detail rear view, showing the dog rocker,returning spring therefor and some of the associated parts.

Fig. 14 shows in perspective and separated the coacting parts that enterinto means for effecting a fore and aft adjustment of the trip-offdevice.

i have shown my invention embodied, in the present instance, in a No. (3Remington- Noiseless machine in which the invention may readily beembodied with but few changes in the existing structural features ofsaid machine. Nevertheless, it should be understood that the inventionis not restricted to embodiment in such machine but nay be employed indifferent characters of typewriting machines wherever found available. p

The present invention has some of the ."'neral ,objects in view theinven- .closedin my' Patent fi, e 151W?, dated claims included hereinare restricted to fca.

turesnot disclosed in said prior patent and application.

l have shown in the accompanying drawings only so much of a No. 6Remington- Noiselcss machine as is necessary to arrive at anunderstanding of my present invention in its embodiment therein.

rlhe platen l is carried in the usual manner by a case shiftingcarriage, comprising end plates 2 and a traverse bar 8 supported Voncrossen anti-i'riction rollers 4. The carriage is thusV mounted totravel from side to side of the machine under che power of a. springdrum 5 connected to the carriage through a pull band 6and under controlof the carriage escapement mechanism.

The escapenient mechanism comprises a rcleasable feed raclr 7 thatnormally' enga a feed pinion 8 carried by a vertically ds posedescapenient Wheel shaft 9. This shaft is mounted at its upper end inacarried by the case shift frame 10 for vvertical case shifting movementtherewith. The lower end portion of the shaft 9 is gioovedlongitudinally at 11 Where it coacts With anti-friction rollers 12carried by tlie'escapemcnt.Wheel 18. The escapemeiit vhcel is supportedby a fixed bracket arm 14st) that while the Wheel is fixed to turn-vvith the shaft 9, said Wheel is supported by its bracket and heldagainst vertical displacement when the shaft shifts independently Withthe case shifting movement of the carriage.

The dog rocker 15 is mounted at its ends on pivotscreivs 16 in arms 17,on the same supporting bracket 18'that is provided with the arm 14. Aforwardly extending arm 19 on the dog rocker carries on they upper sidether-eel" a normally engaged holding 2f), pivote-d at 21 on said arm andforced Loriiial position, shown in Fig. 8, by a 2. .Vhen the carriage isreturned is right Without disengaging the feed :ach 7 the esca lementWheel will turn bact- Ward` .fo-roi the holding dog rearufard away fromthe teeth of the Wheel against the L .l2 i' J..

oi ne spring 22. A stepping dog 28 is pivotedat 24 on the under side ofthe arn 19 of the dog rocker, to receive a limited oscillating movement.This movement of the stepping dog is with the escapement Wheel in thedirection of its feed and against force of the light spring 22, and toan advarfeo position in theopposite direction to Wl. the dog is forcedby the spring 22. rlllie means for limiting the oscillation of thestepping dog` 28 comprises a bifurcation 26 inthe tail of the steppingdog coacting with the free end port-ion of an arm 27 pivoted at 28 on anarm 29 on the dog rocker 15. The pivot 28 is adjustable to different setpositions along a slot 8O in the end of the arin 29, to vary the pointsof arrest of the stepping dog. A returnii'ig spring 81 for the dogrocker (see Fig. 18) is connected at one end toV a tension adjustingdish 82 threaded on the left-hand screiv 16 and held in its adjustedposition by a lock nut 88. rThe free end of the sp ing coacts with anoff-set fliie'er 84 on the dog rocher. A plate 85 is pivoted on theleft-hand screw 16 and extends into the path of movement of the finger84 on the dog rocher. An olfset ear 86 on the plate 85 is tappedtoireceive'a set screu7 87. This screw constitutes an adjustable stopthat coacos with the associate arm 17 of the supporting bracket to limitthe inet-ion of the doe rocher to normal position. n

The escapemcnt mechanism as thus far described is the saine as thatemployed in the Romington-Noiseiess No. 6 machine, and

aside from being a. substantially noiseless escapement, the reverse feedvariety. That is to say, the carriage is let olf for a complete letterspace moif'ement on the down stroke of the p inting key. Thus, byreferring to Figs. 9 to 12 inclusive, it will be understood that on thedepression of a printing key, or the space lrey, the holding dog 2()Will disengage from the tooth at' of the escapement Wheel and thestepping dog 28 will be moved into the path of the next oncoming tooth bof the escapement Wheel asY shown in Fig. 10. At this time the Wheel isfree to advance to the Fig. 11 position, permitting the advance of theescapement wheel and carriage a letter space distance. The return motionof the dog rocker, on the release of the depressed key, returns the dogs20 and 28 to the normal, Fig. 12, position.

l have described in detail this escapcment mechanism of theRemington-l'\.Toisele-ss machine in order that the fea-tures to be laterdescribedr of the present invention, in their c'o-operation with suchescapement mechanisin, may be clearly comprehended. lt should be unlerstood, however, that any suitable escapemeiit devices Whether of theordinary7 or reverse type, may be employed in combination With thecontrolling means which I Will .now describe.

In the present instance the escapement is controlled Wholly by anactuation of the dog rocker in the manner described, from a universalbar Which is controlled by the printing keys and from a trip-ofi1actuating device cooperative directly With the dog rocker and controlledby a separate tra-in of connections from the space key.

The type actions of the machine are of the usual construction employedin theReming- Htl ton-Noisel'ess No. 6 machine, but it is necessary todescribe them somewhat in detail and theV manner in which the escapementmechanism is controlled thereby, in order to arri-ve at an understandingof the present invention. In said machine two printing keys areassociated with each type bar to selectively actuate it to print fromone or another type, depending on the key actuated. For the purpose ofthe present invention, however, it is merely necessary to consider theoperation of the type bar from a single key, which may be either of theassociated keys ordinarily employed; it being understood that theoperation is the same, so far as the escapement mechanism is concerned,for all printing keys. The key lever 38 carries a printing key 39 and isconnected through a link 40 with a sub-lever 41. This sub-lever and theassociated key lever are limited in their depression by a stop 42. Thesub-lever V41 coacts with an arm 43 of an angular actuating or drivinglever 44 pivotally connected at 45 to a momentum accumulator 46, one armof which is pivoted at 47 to a member 48 of a toggle, the other member49 of which is connected at 50 to the type bar 51. The t-ype bar ismounted on links 52 and53y for movement to the printing position. Thelever 44 carries a depending actuating device 54 bifurcated to straddlea curved universal bar 55 and shown in the present construction withconsiderable lost motion before the universal bar is taken up thereby.This universal bar forms part of a frame pivotally connected to andsupported on links 57 and 58. A central depending arm 59 on theuniversal bar frame is pivoted to a crank arm 60 on a rock shaft 61.There are two additional arms G2 on the universal bar frame, eachypivotally connected at G3 to a crank arm 64 on the rock shaft 61, andwhich corresponds to the crank arm GO but is located near end of vtheshaft 61. In this manner the universal bar is supported for up and downmovement for transmitting a rocking movement to the shaft 61. Adepending crank arm G5 on the rock shaft G1 is connected to a rearwardlyextending pull link or rod 66, the rear end of which passes freelythrough an open-ing in a` depending arm 67 on the dog rocker. Anadjustable nut or contact 66a is threaded on the rear end of the pullrod G6 to transmit its forward pull to the dog rocker. I' lock nut holdsthe nut 66 in its adjusted position. The dog rocker spring 31 exerts itsforce to return the dog rocker, the universal ba-r and the intermediateconnections to normal position.

In actuating a printing key it is, we will say, depressed to the limitof its movement, as shown in Fid. 2. Then the sub-lever 41 reaches thelimit of its operating movement,

'ff .as-shown in this figure, the lost motion.- be

tween the universal bar actuating device 54 and the universal bar 55will be taken up and the actuating lever 44 will continue its movementby the momentum of said lever and the parts connected therewith. Thiswill result in completing the movement of the toggle members 48, 49 tosubstantially a straight line position, causing the type bar to continueits movement to printing position, as indicated by the dotted lineshowing in Fig. 2. It is during this movement by momentum of the lever44 and parts connected therewith that the device 54 coacts with theuniversal bar 55 to actuate it and thus operate the escapement mechanismand permit the carriage to receive a letter feed movement. It will beunderstood that this movement of the type bar from the full to thedotted line position in Fig. 2, is so rapidly effected that the imprintis produced before theA carriage receives its letter-space step. It alsowill be understood from what has been said that should an operator holdthe printing key 39 down, as shown in Fig. 2, the universal bar, aftercompleting` its n vement to effect an operation of the escapementmechanism and a step of the carriage, will return to the normal positionshown in said ligure, so that said universal bar and the escapementcontrolled thereby may be actuated indenitely by the space key, as willpresently appear'.

The space key G8 is mounted on arms G9 fixed on a rock shaft 70, thespace key being shown in the position indicated because of the lack ofspace to show said key in the position it occupies in front of thekeyboard. The shaft 70 is supported at its ends on pivot screws 71threaded through tapped openings in bracket arms 72. An upwardly andrearwardly extending crank arm 73 is fixed on the rock shaft 70 and hasthe forward end of a substantially horizontally disposed pull link 74pivoted thereto by adjustable means, as will be hereinafter described.This link extends fore and aft of the machine and is pivoted at its rearend to an upright trip-olf or actuating device 76, as indicated at 77.This device is in the nature of an upstanding lever arm connectedintermediate its ends to the link 74 and mounted at its lower end forpivotal and also for bodily sliding movement. Thus, the device 76 has aninclined slot 78 in the lower end thereof in which is received a headedpivot pin 79 that projects laterally ried thereby. The screw 82 isfirmly secured in place by a lock nut (not shown) on the opposite sideof the bracket arm 8B. The screw 81 is in the nature of a headedclamping screw secured to the bracket arm 83 in the same manner as thescrew 82. The stem of the screw 81 passes freely through a slot 84 inthe plate 8O and permits the hereinbefore described adjustment of theplate 80 when the screw 81 is loosened. Said screw, however, whentightened holds the plate securely in its adjusted position. The link 74has an off-set depending arm 74 extending therefrom, and to the free endof the arm is connected one end of a comparatively light contractilespring d. This spring extends upwardly and rearwardly and is anchored atits upper end on an extension of.

the pivot pin 79. The force of this spring tends to lift the rear end oflink 74, and the actuating device 76 connected therewith, and also tendsto return the link 74 rearwardly to normal position. The upper free endportion of the arm 76 is provided at the front side with a curvedcontact or cam face or edge 85 that terminates in a point 86 from whichextends a second inclined con-` 15 and move the latter the full extentof its movement from normal position, as represented in Fig. 5. Thisligure shows the parts as they appear just before the point 86 haspassed forward of the roller and released it and the dog rocker forindependent return movement to the normalF ig. 6 position. This lastmentioned figure shows the parts as they appear after the space key hasreached the limit of its depression where it is arrested by a paddedstop 90, as shown in Fig. 1. It will be understood that at this timethedog rocker is in its normal position after having permitted a letterspace ad- Vance of the carriage at the downstroke of lthe space key, andis in position to be actuated by an operation of a printing key,notwithstanding the space key is held depressed, as shown in Fig. 1.During the operation of the dog rocker by the Adepression of the spacebar as just describedthe actuating member'or device 76 receives only apivotal movement, as will be understood from a comparison of Figs. 4,and 6. This is due to the construction and relative arrangement of theparts, and to the slight up-pull of the spring CZ on the link 74, whichis transmitted to the member 76 and tends to hold said member so thatthe wall forming the lower end of the inclined slot 78 however, theoperator releasesthe space key and enables it to return to normalposition with the aid of its returning spring 91 and the spring Z theinclined face 87 of the member 76 will coact with roller 88 on thepreviously returned dog* rocker, and said member 76 will receive alsliding movement on Vits pivot 79 from the Fig. 6 to the Fig. 7position. This is due to the fact that the contact face 87 at this timeis exerting a force substantially against a dead centered resistance ofthe pivots 16 of the dog rocker, which results in the dog rocker notbeing actuated. But it also results in wedging or camming the member 7 6vwith a sliding action on its pivot 79 to a lowered position by thereaction of the spring 91 which overcomes the comparatively light forceof the spring (l. Otherwise expressed, the member 76 in returning tonormal position has its pivotal movement at the upper end arrested bythe dog` rocker or the roller 88 thereon. At this time the reaction ofthe spring 91 will be exerted on said member to displace it with acammed sliding movement on its pivot 79 against the power of the springd. Then this sliding movement is completed the parts reach substantiallythe position shown in Fig. 7. This last mentioned ligure shows the partsas they are disposed just before the point 86 on the actuating memberpasses the roller in the return movement of said member to the normalFig. 4 position. By considering Figs. 4, 5, 6 and 7 and the line e,which passes through the pivots 16 of the dog rocker, it will be seenthat the member 76 in returning to normal position docs not actuate thedog rocker and that as soon as said member passes rearwardly from theFig. 7 position the spring 91 will no longer be eifective to overcomethe force of the spring d, which will then cause the member to slide upand bring the lower end wall of the slot 7 8 seated against the pivotpin 79 by the time, or before, the actuatingmember reaches the normal,Fig. 4, position. Said member is therefore restored Vto position, whereon its next forward pivotal movement it will actuate the dog rocker.

It will be understood-that the positions of the parts of the escapementmechanism represented in Figs. 9, 1G, and 12 correspond with the partsas they are shown' in Figs. 4, 5 and 6 respectively when the escapementmechanism is controlled by the space key, and that the representation ofthe cycle of movements of the escapement devices shown in Figs. 9, 10,11 and 12 is the same whether the control is by a printing key or thespace key, although separate and distinct trains of connections areemployed from said keys.

Referring more particularly to Fig. 14 it will beseen that the pivotconnection be tween the crank arm 7 3 and the link is adjustable toadjust the link forward or backward on the arm 7 3. The parts of saidconnection include an eccentric 92 having a hexagonal head 93 by whichit may be turned. This eccentric is received in a opening 94e in theforward end of the link 7 4. An eccentrically located opening 95 extendsthrough the eccentric 92 for the reception of a headed binding screw 96.The threaded end of this rscrew is received in a tapped opening 97 inthearm 73 and extends beyond the left-hand side of said arm where itreceives a lock nut 98. By turning the eccentric 92 the link 74 may beshifted slightly forward or backward on the arm 73, thereby determiningthe normal fore and a-ft position of the actuating member 76 and thusregulate the timing of the pickup and release of the dog rocker by saidmember. lVhen the eccentric 92 has been adjusted to proper position atightening of the screw will bind and hold the eccentric againstaccidental displacement from such position of adjustment. The lock nut98 is then tightened to hold the screw firmly against accidentalmovement out of binding engagement with the eccentric.

To further regulate the action of the mem ber 76 on the roller 88, theup and vdown adjustment of the pivot 79 by the plate 80, as hereinbeforedescribed, is availed of. The purpose of this particular adjustment isto determine the extent of motion transmitted to the dog rocker at eachthrow of the trip-off device 7 6, whereas the separate and distinctadjustment 92 determines the points in the throw of the trip-oil devicewhen the dog rocker is picked up and released, as hereinbeforeindicated. It is essential that these adjustments be separately andindependently effected in order to obtain the desired results.rlherefore, the action of the tip-oil mechanism from the lspace key maybe nicely timed and regulated to obtain the desired resultsindependently of the timing of the operation of the escapement -by theprinting keys and without interfering therewith.

It will be seen from the foregoing that I have provided simple andhighly effective means that enable the carriage to be vadvanced underthe operation of a printing key while the space key is held depressed,and that conversely the carriage may be ad vanced by the actuation ofthe space key while a printing key is held depressed.

Vhile various changes may be made in the construction, and certainfeatures thereof may be employed without others, without departing frommy invention as it is defined in the accompanying claims, -neverthelessfrom certain aspects it is an important factor of the present inventionthat 'I am enabled, with but slight changes in the existing machines,such as the No. 6 Remington-Noiseless machine, to embody the presentinvention therein, even though the invention is not restricted to itsinclusion in such machines.

that I claim as new and desire to by Letters Patent, is 1- l. Thecombination of a carriage, escapement mechanism therefor including a dogrocker, a type bar, a printing key, intermediate actuating connectionsbetween said printing rey and type bar that are actuated by the forceexerted on the printing rey and enable the type bar to continue itsmotion to the printing position and then move back from said printingposition while the printing key is maintained at the lowest point of itsdip, a universal bar actuated by the continued motion of certain of saidintermediate actuating connections, operative connections intermediatesaid universal bar and dog rocker to rock the latter by the universalbar and to pe 1mit an actuation of the dog rocker independently of saiduniversal bar, a space key, an actuating member mounted for bodilysliding and pivotal movement and operable directly on said dog rocker toactuate it and permit an independent return movement of the dog rockerto normal position, said actuating member receiving a pivotal movementto actuate the dog rocker and receiving a sliding` movement to avoidactuating the dog rocker in the return of the actuating member to normalposition, and independent connections between said space key and saidactuating member, whereby the dog rocker may be actuated by the spacekey while the printing key is held at the lowest point of its dip andthe dog rocker may be actuated by the printing key while the space Ykeyis held depressed.

2. The combination of a carriage, escapement mechanism thereforincluding a dog rocker, a type bar, a printing key, intermediateactuating connections between said printing key and type bar that areactuated by the force exerted on the printing key and enable the typebar to continue its motion tothe printing position and then move backfrom said printing position while the printing key is maintained at thelowest vpoint of its dip, a universal bar actuated by the continuedmotion otcertain of said intermediate actuating connections, operativeconnections intermediate said universal bar and dog rocker to rock thelatter by the universal bar and to permit an actuation ofthe dog rockerindependently yof said universal bar, a space key, a pull-link thatextends fore and aft of the machine and which is actuated by said spacekey independently of the universal bar, a downwardly extending arm onsaid pulllink, an upright actuating member to which said pull-link ispivoted, said actuating member heilig mounted for sliding as well SECUFGas for pivotal -movement and racting directly on the dog rocker by apivotal movement to operate the dog rocker and permit an independentreturn movement thereof, said member receiving a sliding movement duringits return to normal position to clear the dog rocker without actuatingit, and a spring connected to said downwardly extending arm and exertingits force to return the pull-link and the parts vconnected thereto tonormal position and also tending to prevent a sliding movement of theactuating member during the actuation of the dog rocker thereby.

,3. The combination of a carriage,escapement mechanism thereforincluding a dog rocker, a type bar, a printing key, interme- Vdiateactuating connections between said printing key and type bar that areactuated by the force exerted on the printing key and enable the typebar to continue its motion to the printing position and then move backfrom said printing position while the printing key is maintained at thelowest point of its dip, a universal bar actuated by the continuedmotion of certain of said intermediate actuating connections, operativeconnections intermediate said universal bar and dog rocker to rock thelatter by the universal bar and to permit an actuation of the dog rockerindependently of said universal bar, a space key, a substantiallyhorizontally disposed pull-link which is actuated by said space keyindependently of the universal bar, a downwardly extending arm on saidpull-link, an upright actuating member to which said pull link ispivoted, said actuating member having a bearing slot in which a fixedpivot is received and on which said member is mounted for sliding aswell as Vfor pivotal movement and acting by a pivotal movement on ananti-friction roller carried by the dog rocker to operate it and permitan independent return movement thereof, said member receiving a slidingmovement on its pivot during its return to` normal position to clear they dog rocker without actuating it, and a spring connected to saiddownwardly extending arm andv exerting its force to return the pull-linkand the.V parts connected thereto to normal position and also tending tolift and prevent a. sliding movement of the actuating member during theactuation of the dog rocker thereby, whereby the dog rocker may beactuated by the space key while the printing key is held at the lowestpoint of its dip and the dog rocker may be actuated by the printing keyVwhile `the space key is held depressed.

by the force exerted on the printing key and enable the type bar tocontinue its motion to the printing position and then move back from.said printing position while the pritning key is maintained at thelowest point of its dip, said actuating connections including a momentumaccumulator that causes the type bar to be noiselessly applied with apressure imprint, a universal bar actuated by the continued motion ofcertain of said intermediate actuating connections under the action ofsaid momentum accumulator, operative connections intermediate saiduniversal bar and dog rocker to rock the latter by the universal bar andto permit an actuation of the dog rocker independently of said universalbar, a space key, a pull-link that extends fore and aft of the machineand which is actuated by said space key independently of the universalbar, a downwardly extending arm on said pull-link, an upright actuatingmember to which said pull-link is pivoged, said actuating member beingmounted for sliding as well as for pivotal movement and acting directlyon the dog rocker by a pivotal movement to operate the dogrocker andpermit an independent return movement thereor', said member receiving asliding movement during its return to normal position to clear the dogrocker without actuating it, and a spring connected to said downwardlyextending arm and exerting its force to return the 'pull-link and theparts connected thereto to normal position and also tending to prevent asliding movement of the actuating member during the `actuation of thedog rocker thereby.

5. The combination of a carriage, escapement mechanism thereforincluding a dog rocker; a type bar; a printing key; means controlledthereby for actuating said type bar by the force exerted on the printingkey; a universal bar actuated at each operation of said printing key;intermediate connections between said universal bar and dog rocker foractuating the latter from the former and for affording an independentactuation of the dog rocker; a space key; and independent actuatingconnections from the space key to the dogrocker for actuating the dogrocker and for affording an independent actuation of the dog rocker bythe universal bar, said independent actuating connections comprising apull-link that extends fore and aft of the machine and which is actuatedby said space key independently of the universal bar, a downwardlyextending arm on said pull-link, an upright actuating member to whichsaid pulllink is pivoted, said actuating member being mounted forsliding as well as for pivotal movement and acting directly on the dogrocker by a pivotal movement to operate the dog rocker and permit anindependent return movement thereof, said member receiving a slidingmovement during its return to normal position to clear the dog rockerwithout actuating it, and a spring connected to said downwardlyextending arm and exerting its force to return the pull-link and theparts connected thereto to normal position and also tending to prevent asliding movement of the actuating member during the actuation of the dogrocker thereby.

6. The combination of a carriage, escapement mechanism thereforincluding a dog rocker, a type bar, a printing key, means controlledthereby for actuating said type bar by the force exerted on the printingkey, a universal bar actuated at each operation of said printing key,intermediate connections between said universal bar and dog rocker foractuating the latter from the former and for affording an independentactuation of the dog rocker, a space key, and independent actuatingconnections from the space key to the dog rocker for actuating the dogrocker and for affording an independent actuation of the dog rocker bythe universal bar, said independent actuating connections comprising asubstantially disposed pull-link which is actuated by said space keyindependently of the universal bar, a downwardly extending arm on saidpull-link, an upright actuating member to which said pull-link ispivoted, said actuating member having a bearing slot in which a fixedpivot is received and on which said member is mounted for sliding aswell as for pivotal movement and acting by a pivotal movement on ananti-friction roller carried by the dog rocker to operate it and permitan independent return movement thereof, said member receiving a slidingmovement on its pivot during its return to normal position to clear thedog rocker without actuating it, and a springconnected to saiddownwardly extending arm and exerting its force to return the pull linkand the parts connected thereto to normal position and also tending tolift and prevent a sliding movement of the actuating member during theactuation of the dog rocker thereby.

7 The combination of a carriage, escapement mechanism therefor, and keyconyrolled means for said escapement mechanism including a trip-offdevice that releases the actuated part controlled thereby before saidtrip-off device has completed its actuating movement thus affording anindependent return movement of the actuated part,` a pivot pin on whichsaid device is supported for pivotal actuating movement and slidingclearing movement in the return thereof, and means for adjusting saidpivot pin to different set positions.

8. The combination of a carriage, escapement mechanism thereforincluding a dog rocker, and key controlled actuating means for said dogrocker including a trip-oft' device coacting therewith and that releasesthe dog rocker before said trip-off device has completed its actuatingmovement thus affording an independent return movement of the dogrocker, a pin on which said device is supported for pivotal and slidingmovement, means for adjusting said pin to different set positions, andindependently adjustable means in the actuating means for said trip-offdevice to vary its normal position around said pin.

Signed at Middletown, in the county of Middlesex and State ofConnecticut this 28th day of October A. D. 1927.

GEORGE G. GOING.

